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<p>Effective management of farrowing room temperature optimizes production costs by influencing sow feed intake, piglet growth, and long-term productivity, making it a crucial factor for farmers. This study aimed to evaluate the impact of a 2&#xa0;°C increase in the temperature setpoint in farrowing rooms equipped with a crossflow evaporative cooling system on total electrical energy consumption and sow and litter performance. Sows (parities 1 to 4) were allocated to two temperature treatments. In T23–20 (<i>n</i> = 232), room temperature was set to 23&#xa0;°C during farrowing week and reduced by 1&#xa0;°C per week, reaching 20&#xa0;°C at weaning. In T25–22 (<i>n</i> = 213), temperatures were managed similarly, ranging from 25&#xa0;°C to 22&#xa0;°C. Total electrical energy consumption was 7,724 kWh for T23–20 and 6,151 kWh for T25–22, a 20.4% reduction in the energy consumption with the higher temperature threshold. However, sows in T23–20 had greater average lactation feed intake (6.5 ± 0.1&#xa0;kg/day vs. 6.3 ± 0.1&#xa0;kg/day; <i>P</i> = 0.03) and litter weight gain adjusted to 26 days (67.8 ± 1.3&#xa0;kg vs. 62.0 ± 1.4&#xa0;kg; <i>P</i> &lt; 0.01) compared to T25-22. Pre-weaning mortality was not affected by treatment (7.9 ± 0.6% vs. 9.1 ± 0.7%; <i>P</i> = 0.23). Parity had a significant effect on sow body weight at farrowing and at weaning, sow lactation feed intake, and piglet average daily gain (<i>P</i> &lt; 0.0001). Even small adjustments to the temperature setpoint of farrowing rooms can influence sow feed intake and piglet growth. Increasing the temperature by 2&#xa0;°C reduced total electrical energy consumption by 20.4% (US$1.00/sow), but the economic losses associated with reduced piglet weaning gain were estimated at US$5.28/litter/sow. Therefore, adopting short- and long-term strategies to maintain cooler farrowing environments and respect the thermal needs of the sow is economically advantageous.</p>

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Effect of farrowing room temperature adjustment on total electrical energy consumption and sow and litter performance

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月20日

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  • Jacson Eduardo Bittencourt,
  • Carolini Schultz,
  • Vanessa Peripolli,
  • Monike Willemin Quirino,
  • Luciana Foppa,
  • José Luiz Corezzolla,
  • Gustavo Freire Resende Lima,
  • Fabiana Moreira,
  • Thomaz Lucia,
  • Rafael da Rosa Ulguim,
  • Ivan Bianchi

摘要

Effective management of farrowing room temperature optimizes production costs by influencing sow feed intake, piglet growth, and long-term productivity, making it a crucial factor for farmers. This study aimed to evaluate the impact of a 2 °C increase in the temperature setpoint in farrowing rooms equipped with a crossflow evaporative cooling system on total electrical energy consumption and sow and litter performance. Sows (parities 1 to 4) were allocated to two temperature treatments. In T23–20 (n = 232), room temperature was set to 23 °C during farrowing week and reduced by 1 °C per week, reaching 20 °C at weaning. In T25–22 (n = 213), temperatures were managed similarly, ranging from 25 °C to 22 °C. Total electrical energy consumption was 7,724 kWh for T23–20 and 6,151 kWh for T25–22, a 20.4% reduction in the energy consumption with the higher temperature threshold. However, sows in T23–20 had greater average lactation feed intake (6.5 ± 0.1 kg/day vs. 6.3 ± 0.1 kg/day; P = 0.03) and litter weight gain adjusted to 26 days (67.8 ± 1.3 kg vs. 62.0 ± 1.4 kg; P < 0.01) compared to T25-22. Pre-weaning mortality was not affected by treatment (7.9 ± 0.6% vs. 9.1 ± 0.7%; P = 0.23). Parity had a significant effect on sow body weight at farrowing and at weaning, sow lactation feed intake, and piglet average daily gain (P < 0.0001). Even small adjustments to the temperature setpoint of farrowing rooms can influence sow feed intake and piglet growth. Increasing the temperature by 2 °C reduced total electrical energy consumption by 20.4% (US$1.00/sow), but the economic losses associated with reduced piglet weaning gain were estimated at US$5.28/litter/sow. Therefore, adopting short- and long-term strategies to maintain cooler farrowing environments and respect the thermal needs of the sow is economically advantageous.